<a href=http://onlineslangdictionary.com/meaning-definition-of/ragtop>ragtop</a> To link to this term in a wiki such as Wikipedia, insert the following. [http://onlineslangdictionary.com/meaning-definition-of/ragtop ragtop] Some wikis use a different format for links, so be sure to check the documentation.
Talc (1), the softest mineral on the Mohs scale has a hardness greater than gypsum (2) in the direction that is perpendicular to the cleavage. Diamonds (10) also show a variation in hardness (the octahedral faces are harder than the cube faces).
On the scale of 10 hardest minerals, talc is listed as 1 on the Mohs hardness scale. Only caesium,rubidium with 0.2-0.3 hardness and lithium, sodium and potassium with 0.5-0.6 hardness are softer than Talc.